Fastening for runners of grinding-m ills



(No Mo del.)

H. H. GOLF-S;

FASTENING FOR RUNNERS 0F GRINDING MILLS. No. 375,535. Patented Dec. 27, 1887'.

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N. PETERS. PMRo-Lilhognpher. Wuhington. D C.

I UNITED STATES PATENT OFFICE.

HENRI H. OOLES, OF PHILADELPHIA, PENNSYLVANIA.

FASTENING FOR RUNNERS OF GRINDING-MILLS.

SPECIFICATION forming part of Letters Patent No. 375,535, dated December 27, 1887.

Application filed February 24, 1887. Serial No. 228,709. (No model.)

To a whom it may concern.-

Be it known that I, HENRI H. OOLES, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful 1mprovement in Fastenings for Runners of Grinding-Mills,which improvement is fully set forth in the following specification and accompanying drawings, in which Figure 1 represents an end view of a fastening for the runner of a grindingmill embody: ing my invention, the shaft being shown in section. Fig. 2 represents a longitudinal section thereof.

Similar letters of reference indicate corre sponding parts in the two figures.

My invention consists in attaching the runner of a grinding-mill to the shaft thereof in such manner that should the runner be obstructed its fastening slips or yields, whereby injury to the same and connected parts thereof is prevented, as will be hereinafter set forth.

Referring to the drawings, A represents the runner of a grinding-mill, and B the shaft thereof. Freely encircling the shaft is a collar, 0,- having a flange or projecting portion, O', on the side of which is formed, near its outer edge, a circular rim, D, the latter being concentric with the shaft B.

To the collar 0, which is shown as corru-- gated on its outer face, is secured the runner A by a metallic coupling; but for the purposes of this invention said collar may be plain instead of corrugated, and the runner secured thereto in any suitable manner; or the runner may have the rim D directly attached thereto without the collar 0.

Within the rim D is a collaror sleeve, F, which, by means of a set-screw, G, is connected with the shaft B, whereby said collar rotates with the said shaft. D is also a split ring or annulus, E, having two ofits ends connected to the collar F, so as Within the rim to rotate therewith and with the shaft B. The other ends of the ring are in contact with the tapering plug H, which has itsouter end threaded for engagement of a nut, J, by which the degree'of expansive action of the plug on the ends of the ring may be adjusted. posed between the nut J and ringE isa washer, K, for preventing contact of said nut and ring. To the side of the plug H is secured a pin, L, which enters between the ends of the ring E for preventing rotation of the plug.

It will be seen that when the plug H is properly tightened against the ends of the ring E the rim D and ring E are firmly connected, whereby the power of the shaft B is imparted to the rim D, and consequently to the runner, the holding action of the split ring being sufficient to rotate the runner during the operation of grinding. Should, however, the runner be obstructed in any manner, whereby its rotation is resisted, the rotation of the shaftB continues, but the split ring slips on the rim D, whereby, while the runner is held by the obstruction, said runner and connected parts are prevented from being injured or fractured.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

Inter- U 1. The shaft B, with the runner A loosely of its ends secured to the collar F, the tapering plug H,with screw-threaded end, and pin L, and the nut J, substantially as described.

- HENRI H. GOLES.

Witnesses:

JOHN A. WIEDEESHEIM, R0121. AI'roN. 

